| 基于耀斑改正的多光谱水深反演方法研究 |
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| 引用本文： | 沈蔚,纪茜,邱耀炜,吴忠强.基于耀斑改正的多光谱水深反演方法研究[J].海洋技术,2019,38(5). |
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| 作者姓名： | 沈蔚 纪茜 邱耀炜 吴忠强 |
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| 作者单位： | 上海海洋大学海洋科学学院,上海201306;上海市海洋局河口海洋测绘工程技术研究中心,上海201306;南京大学地理与海洋科学学院,江苏南京,210023 |
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| 摘 要： | 利用WorldView-2四波段卫星数据和电子海图数据,基于改进的耀斑改正算法和双波段比值算法,反演获得了3处典型海域的浅水水深。通过不同海域、不同耀斑条件下水深反演实验,探讨了RED,NIR波段在典型四波段水深反演中的作用和影响,发现在双波段比值法水深反演中,引入RED+NIR波段进行耀斑改正处理,可以增加珊瑚、海藻等绿色物质覆盖海底的反射率,有效地提高该类海域的水深反演精度。基于耀斑改正的多光谱水深反演方法,适用于中轻度耀斑条件下,水质较清澈的浅海水深反演,可在国内外典型四波段卫星数据水深反演中推广应用。
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| 关 键 词： | WorldView-2 耀斑 水深遥感 双波段比值 四波段 |
Multispectral depth inversion method based on the glint remove correction |
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| SHEN Wei,JI Qian,QIU Yaowei and WU Zhongqian.Multispectral depth inversion method based on the glint remove correction[J].Ocean Technology,2019,38(5). |
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| Authors: | SHEN Wei JI Qian QIU Yaowei and WU Zhongqian |
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| Institution: | 1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China; 2. Estuarine and oceanographic mapping Engineering research center of Shanghai municipal ocean bureau, Shanghai 201306, China,1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China; 2. Estuarine and oceanographic mapping Engineering research center of Shanghai municipal ocean bureau, Shanghai 201306, China,1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China; 2. Estuarine and oceanographic mapping Engineering research center of Shanghai municipal ocean bureau, Shanghai 201306, China and 3 School of Geographic and Oceanographic Sciences, Nanjing University,Nanjing,210023 |
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| Abstract: | Taking the Worldview-2 four-band satellite data and electronic chart data as sources, obtained the shallow water depth of three typical sea areas based on modified flare correction model and dual-bands ratio model. By the bathymetry experiments under different seas and different flare conditions, discussed the role and influence of RED band and NIR in typical four-band water depth inversion, it is found that the reflectivity of green matter such as corals and seaweeds can be increased to cover the seabed, and the water depth inversion accuracy of such sea areas can be effectively improved by introducing RED+NIR bands for flare correction in dual-band ratio bathymetry. The multi-spectral water depth inversion method based on flare correction is suitable for deep inversion of water quality with clear light seawater under moderate and light flare conditions, and can be popularized and applied in water depth inversion of typical four-band satellite data at home and abroad. |
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